Hydrogen trapping in additive manufactured Ti–6Al–4V alloy

Polina Metalnikov; Dan Eliezer; Guy Ben-Hamu

doi:10.1016/j.msea.2021.141050

Hydrogen trapping in additive manufactured Ti–6Al–4V alloy

Polina Metalnikov, Dan Eliezer, Guy Ben-Hamu

Department of Materials Engineering

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

Environmental degradation of Ti–6Al–4V alloy in the presence of hydrogen strongly depends on the interactions between hydrogen atoms and various microstructural defects. Thus, the initial microstructure of Ti–6Al–4V influences its performance in the presence of hydrogen. In this study, we compared hydrogen interactions and desorption characteristics of Ti–6Al–4V alloy prepared by selective laser melting (SLM) and electron beam melting (EBM). It was found that the processing has a strong influence on the susceptibility to hydrogen embrittlement (HE). The degradation of SLM Ti–6Al–4V in hydrogen containing environment will probably occur through hydride formation and cleavage mechanism. On the other hand, Ti–6Al–4V prepared by EBM is more likely to degrade through hydrogen enhanced localized plasticity (HELP) mechanism.

Original language	English
Article number	141050
Journal	Materials Science and Engineering: A
Volume	811
DOIs	https://doi.org/10.1016/j.msea.2021.141050
State	Published - 15 Apr 2021

Keywords

Additive manufacturing
Hydrogen embrittlement
Hydrogen trapping
Thermal desorption spectroscopy
Ti–6Al–4V

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.msea.2021.141050

Cite this

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title = "Hydrogen trapping in additive manufactured Ti–6Al–4V alloy",

abstract = "Environmental degradation of Ti–6Al–4V alloy in the presence of hydrogen strongly depends on the interactions between hydrogen atoms and various microstructural defects. Thus, the initial microstructure of Ti–6Al–4V influences its performance in the presence of hydrogen. In this study, we compared hydrogen interactions and desorption characteristics of Ti–6Al–4V alloy prepared by selective laser melting (SLM) and electron beam melting (EBM). It was found that the processing has a strong influence on the susceptibility to hydrogen embrittlement (HE). The degradation of SLM Ti–6Al–4V in hydrogen containing environment will probably occur through hydride formation and cleavage mechanism. On the other hand, Ti–6Al–4V prepared by EBM is more likely to degrade through hydrogen enhanced localized plasticity (HELP) mechanism.",

keywords = "Additive manufacturing, Hydrogen embrittlement, Hydrogen trapping, Thermal desorption spectroscopy, Ti–6Al–4V",

author = "Polina Metalnikov and Dan Eliezer and Guy Ben-Hamu",

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doi = "10.1016/j.msea.2021.141050",

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journal = "Materials Science and Engineering: A",

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T1 - Hydrogen trapping in additive manufactured Ti–6Al–4V alloy

AU - Metalnikov, Polina

AU - Eliezer, Dan

AU - Ben-Hamu, Guy

PY - 2021/4/15

Y1 - 2021/4/15

N2 - Environmental degradation of Ti–6Al–4V alloy in the presence of hydrogen strongly depends on the interactions between hydrogen atoms and various microstructural defects. Thus, the initial microstructure of Ti–6Al–4V influences its performance in the presence of hydrogen. In this study, we compared hydrogen interactions and desorption characteristics of Ti–6Al–4V alloy prepared by selective laser melting (SLM) and electron beam melting (EBM). It was found that the processing has a strong influence on the susceptibility to hydrogen embrittlement (HE). The degradation of SLM Ti–6Al–4V in hydrogen containing environment will probably occur through hydride formation and cleavage mechanism. On the other hand, Ti–6Al–4V prepared by EBM is more likely to degrade through hydrogen enhanced localized plasticity (HELP) mechanism.

AB - Environmental degradation of Ti–6Al–4V alloy in the presence of hydrogen strongly depends on the interactions between hydrogen atoms and various microstructural defects. Thus, the initial microstructure of Ti–6Al–4V influences its performance in the presence of hydrogen. In this study, we compared hydrogen interactions and desorption characteristics of Ti–6Al–4V alloy prepared by selective laser melting (SLM) and electron beam melting (EBM). It was found that the processing has a strong influence on the susceptibility to hydrogen embrittlement (HE). The degradation of SLM Ti–6Al–4V in hydrogen containing environment will probably occur through hydride formation and cleavage mechanism. On the other hand, Ti–6Al–4V prepared by EBM is more likely to degrade through hydrogen enhanced localized plasticity (HELP) mechanism.

KW - Additive manufacturing

KW - Hydrogen embrittlement

KW - Hydrogen trapping

KW - Thermal desorption spectroscopy

KW - Ti–6Al–4V

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U2 - 10.1016/j.msea.2021.141050

DO - 10.1016/j.msea.2021.141050

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JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

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Hydrogen trapping in additive manufactured Ti–6Al–4V alloy

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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